PHP. Как реализовать чтение из CSV для скрипта?

$responses=array();
if (($handle = fopen("test.csv", "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 0, ",")) !== FALSE) {
        $responses[$data[0]]=$data[1];
    }
    fclose($handle);
}

<?php 
$responses=array();
if (($handle = fopen("test.csv", "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 0, ",")) !== FALSE) {
        $responses[$data[0]]=$data[1];
    }
    fclose($handle);
}

	$q = $_GET["q"];

	$response = "";

	if ($q != "") {
		$q = strtolower($q);
		foreach ($responses as $r => $value) {
			if (strpos($r, $q) !== false) {
				$response = $value;
			}
			
		}
	}
	$noresponse = "Sorry I'm still learning. Hence my responses are limited. Ask something else.";
	echo $response === "" ? $noresponse : $response;
?>

hi,hello
sun,moon
yes?,no

array (size=3)
  'hi' => string 'hello' (length=5)
  'sun' => string 'moon' (length=4)
  'yes?' => string 'no' (length=2)